A high performance liquid chromatograph medicine feeding device

Abstract

The utility model discloses a high efficiency liquid chromatograph medicine feeding device belongs to liquid chromatograph technical field, including chromatograph body, the front end of chromatograph body is provided with medicine feeding cavity, the lower surface rotation is connected with support disc in the medicine feeding cavity inside, the top of support disc is provided with medicine feeding subassembly, medicine feeding subassembly includes the pair of support rod no. The utility model medicine feeding subassembly's setting, first through support rod three and support rod two cooperation, guide tray first along support rod three sliding, transition to support rod two, support rod one top again, simplify tray placement process, secondly through electric push rod telescopic drive rack movement, rack engages tooth block and drives support rod two rotation, its place flat and assist support tray, clamp the tray side after folding 90 degrees, further improve tray stability, guarantee medicine feeding process precision, thereby realize the convenient placement of tray, stable support and accurate fixing.

Description

Technical Field

[0001] This utility model belongs to the field of liquid chromatography technology, specifically relating to a drug feeding device for a high-performance liquid chromatograph. Background Technology

[0002] A liquid chromatograph is a precision instrument used for the separation and quantitative analysis of mixtures. Its core principle is to utilize the differences in adsorption and partitioning of components in a mixture between the stationary phase (such as the packing material in the chromatographic column) and the mobile phase (such as a specific solvent) to achieve component separation. It mainly consists of a pump, an injector, a chromatographic column, a detector, and a data processing system. During operation, the pump stably delivers the mobile phase to the system, the injector injects the sample into the mobile phase, the sample enters the chromatographic column with the mobile phase to complete the separation, and then each component enters the detector in sequence to be detected. Finally, the data system converts the results into a chromatogram for qualitative or quantitative analysis.

[0003] The trays of existing liquid chromatograph drug delivery devices are usually positioned using the base positioning structure of the drug delivery module: the base has pre-set slots, guide rails or positioning steps that match the tray, and the tray is pushed in along the guide rail or lowered into the slot to complete the initial positioning; some devices have elastic buckles that automatically lock the tray in place; some use magnetic components to attract the edges of the tray; high-precision models are also equipped with positioning pins that are inserted into the corresponding holes on the tray to ensure no displacement.

[0004] While the existing liquid chromatograph's drug delivery device can automatically lock the tray in place using elastic clips, these clips are prone to loosening after prolonged use. Once the clips loosen, the tray cannot maintain a stable and fixed state, and the tray is prone to slight shaking when the injection needle takes a sample, directly affecting the injection accuracy, causing deviations in the analytical data, and even requiring the experiment to be repeated. Utility Model Content

[0005] The purpose of this invention is to provide a high-performance liquid chromatograph drug delivery device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-performance liquid chromatograph (HPLC) drug delivery device, comprising an HPLC body, a drug delivery chamber at the front end of the HPLC body, a support plate rotatably connected to the lower surface of the drug delivery chamber, a drug delivery assembly at the top of the support plate, the drug delivery assembly including a pair of support rods fixedly connected to the top of the support plate, the support rods being L-shaped, a tray placed on the lateral side surface of the support rods, a folding groove at one lateral end of the support rods, a support rod rotatably connected inside the folding groove, a plurality of teeth arranged in a circumferential array fixedly connected to the side surface of the support rods at the end connected to the folding groove, a rack meshing with the lower part of the teeth, an electric push rod connected to one end of the rack, and a pair of support rods 3 fixedly connected to the lower surface of the drug delivery chamber, the support rods 3 and 2 contacting each other in the same linear direction.

[0007] In a preferred embodiment, the electric push rod is fixedly installed on the inner wall of the folding groove, and the telescopic end of the electric push rod is fixedly connected to the rack. A pair of support rods are arranged in a circumferential array on the top of the support plate.

[0008] In a preferred embodiment, a protective pad is fixedly connected to the side surface of the longitudinal end of the support rod one, and a protective pad is fixedly connected to the top of the support rod two.

[0009] In a preferred embodiment, the support rod three has an adapter groove at one end near the support rod two, and the support rod three is located inside the adapter groove and in contact with the bottom of the adapter groove.

[0010] In a preferred embodiment, the bottom of the tray is provided with a limiting slot of one width adapted to a pair of support rods, and the top of the tray is provided with a sample hole for placing a sample.

[0011] In a preferred embodiment, a servo motor is provided below the support plate. The servo motor is fixedly installed on the inner wall of the lower surface of the drug inlet chamber, and the transmission end of the servo motor is fixedly connected to the support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The design of this utility model's drug-feeding assembly first guides the tray to slide along support rod three in conjunction with support rod two, then transitions it to above support rod two and support rod one, simplifying the tray placement process. Secondly, the extension and retraction of the electric push rod drives the rack to move, and the rack engages with the toothed blocks to rotate support rod two. When laid flat, support rod two assists in supporting the tray, and when folded 90 degrees, it clamps the side of the tray, further improving the tray's stability and ensuring accurate drug feeding. This achieves convenient placement, stable support, and precise fixation of the tray. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the drug delivery assembly and other components of this utility model. Figure 3 This is a cross-sectional three-dimensional structural diagram of a support rod component of this utility model.

[0014] In the diagram: 1. Chromatograph body; 2. Drug inlet chamber; 3. Support plate; 4. Tray; 5. Servo motor; 301. Support rod one; 302. Folding groove; 303. Support rod two; 304. Tooth block; 305. Toothed rack; 306. Electric push rod; 307. Support rod three; 3011. Protective pad one; 3031. Protective pad two; 3071. Adaptor groove; 401. Limiting slot; 402. Sample hole. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention all fall within the scope of protection claimed by the present invention.

[0017] Please see Figure 1-3This utility model provides a high-performance liquid chromatograph (HPLC) drug delivery device, including an HPLC body 1. A drug delivery chamber 2 is provided at the front end of the HPLC body 1. A support plate 3 is rotatably connected to the lower surface of the drug delivery chamber 2. A drug delivery assembly is provided on the top of the support plate 3. The drug delivery assembly includes a pair of support rods 301 fixedly connected to the top of the support plate 3. The support rods 301 are L-shaped. The longitudinal end of the support rods 301 contacts the side of a tray 4 for limiting its position, and the transverse end of the support rods 301 contacts the bottom of the tray 4 for support. The tray 4 is placed on the transverse side surface of the support rods 301, and the tray 4 is used to hold the drug sample. A folding groove 302 is provided at one transverse end of the support rods 301 to provide rotation space for the second support rod 303. The second support rod 303 is rotatably connected inside the folding groove 302. When the second support rod 303 is laid flat, it can support the tray 4. When the second support rod 303 is folded 90 degrees, it can clamp and fix the side of the tray 4. Several toothed blocks 304 arranged in a circular array are fixedly connected to the side surface of the end where the second support rod 303 connects to the folding groove 302. A rack 305 is meshed with the lower part of the toothed blocks 304. An electric push rod 306 is connected to one end of the rack 305. The rack 305 is moved by the telescopic end of the electric push rod 306, thereby driving the second support rod 303 to rotate through the toothed blocks 304 meshing with the rack 305. This achieves the clamping of the tray 4 by the second support rod 303. The lower surface of the inside of the drug inlet cavity 2 is fixed. A pair of support rods 307 are connected, and support rods 307 and 203 are in contact in the same linear direction. They can guide the tray 4, so that the tray 4 first slides on support rods 307, then slides to support rods 203, and finally slides above support rods 301. The electric push rod 306 is fixedly installed on the inner wall of the folding groove 302, and the telescopic end of the electric push rod 306 is fixedly connected to the rack 305. The pair of support rods 301 are located on the top of the support plate 3 and are distributed in a circumferential array.

[0018] Inside the drug inlet chamber 2 of the chromatograph body 1, the support plate 3 is rotatable. A pair of L-shaped support rods 301 arranged in a circular array on its top support the tray 4 at the transverse end and limit the side of the tray 4 at the longitudinal end. When the electric push rod 306 extends and retracts, it drives the rack 305 to move. Since the rack 305 meshes with the toothed block 304 at the end of the support rod 303, it drives the support rod 303 to rotate at the end near the folding groove 302. When the support rod 303 is laid flat, it assists in supporting the tray 4, so that the tray 4 can slide above the support rod 301. When folded 90 degrees, it clamps the side of the tray 4. The design of the drug feeding assembly of this utility model firstly guides the tray 4 to slide along the support rod 307 through the cooperation of support rod 307 and support rod 203, and then transitions to the area above support rod 203 and support rod 101, simplifying the placement process of the tray 4. Secondly, the extension and retraction of the electric push rod 306 drives the rack 305 to move, and the rack 305 engages with the tooth block 304 to drive the support rod 203 to rotate. When it is laid flat, it assists in supporting the tray 4, and when folded 90 degrees, it clamps the side of the tray 4, further improving the stability of the tray 4 and ensuring the accuracy of the drug feeding process, thereby achieving convenient placement, stable support and precise fixation of the tray 4.

[0019] Specifically, such as Figure 2 and Figure 3 As shown, a protective pad 3011 is fixedly connected to the side surface of the longitudinal end of the support rod 301, and a protective pad 3031 is fixedly connected to the top of the support rod 303. The installation of the protective pads 3011 and 3031 can protect the tray 4 placed on the top of the support rod 301, and prevent damage to the tray 4 during placement or clamping.

[0020] When the tray 4 is placed on support rod 301 or held by support rod 303, protective pads 3011 and 3031 directly contact the tray 4, buffering the collision or friction between the tray 4 and the support rod.

[0021] Specifically, such as Figure 2 and Figure 3 As shown, the support rod 307 has an adapter groove 3071 at one end near the support rod 2 303. The support rod 307 is located inside the adapter groove 3071 and is in contact with the bottom of the adapter groove 3071. The support rod 307 provides support for the support rod 2 303, improving the stability and load-bearing capacity of the support rod 2 303.

[0022] When support rod 2 303 is in the supported state, support rod 307 forms a support point for support rod 2 303 through adapter groove 3071.

[0023] Specifically, such as Figure 2As shown, the bottom of the tray 4 is provided with a limiting groove 401 that is adapted to the width of a pair of support rods 301, which improves the stability of the tray 4 sliding on support rods 307, 303 and 301. The top of the tray 4 is provided with a sample hole 402 for placing samples, which is used to place drug samples.

[0024] When the tray 4 is placed or slids, the limiting slot 401 cooperates with the support rod 301 to limit the lateral displacement of the tray 4.

[0025] Specifically, such as Figure 2 and Figure 3 As shown, a servo motor 5 is installed below the support plate 3, which can drive the support plate 3 to rotate at a fixed angle, thereby facilitating the staff to pick up and put down the tray 4. The servo motor 5 is fixedly installed on the inner wall of the lower surface of the drug inlet chamber 2, and the transmission end of the servo motor 5 is fixedly connected to the support plate 3.

[0026] When the servo motor 5 is working, it can drive the support plate 3 to rotate back and forth at a fixed angle, thereby driving the top tray 4 to rotate synchronously and adjusting the position of the tray 4 in the drug inlet chamber 2.

[0027] Working principle and usage process of this utility model: When the staff operates, they first place the tray 4 containing the drug sample into the drug inlet chamber 2 of the chromatograph body 1. At this time, the second support rod 303 is in a flat position. The limiting groove 401 at the bottom of the tray 4 is adapted to the support rod. It first slides on the third support rod 307, then slides to the second support rod 303, and finally slides above the first support rod 301. It is supported by the horizontal end of the first support rod 301 and initially limited by the vertical end. The limiting groove 401 cooperates with the first support rod 301 to prevent the tray 4 from shifting laterally. Then, the electric push rod 306 is activated, and its telescopic end drives the rack 305 to move. The rack 305 meshes with the tooth block 304 at the end of the second support rod 303, causing the second support rod 303 to rotate 90 degrees. It cooperates with the longitudinal end of the first support rod 301 to clamp the side of the tray 4. During the process, the protective pad 3011 at the longitudinal end of the first support rod 301 and the protective pad 3031 at the top of the second support rod 303 make buffer contact to avoid damage to the tray 4. When it is necessary to pick up or place tray 4 or change samples, start servo motor 5 to drive support plate 3 to rotate at a fixed angle, which will rotate tray 4 to a position that is easy to operate. The staff can then easily pick up or place the samples. If it is necessary to continue to inject samples, repeat the above placement and clamping steps.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-performance liquid chromatograph drug delivery device, comprising a chromatograph body (1), characterized in that: The front end of the chromatograph body (1) is provided with a drug inlet chamber (2). A support plate (3) is rotatably connected to the lower surface inside the drug inlet chamber (2). A drug inlet assembly is provided on the top of the support plate (3). The drug inlet assembly includes a pair of support rods (301) fixedly connected to the top of the support plate (3). The support rods (301) are L-shaped. A tray (4) is placed on the lateral side surface of the support rods (301). A folding groove (302) is provided at one lateral end of the support rods (301). 2) is internally rotatably connected to a second support rod (303). The side surface of the second support rod (303) connected to the folding groove (302) is fixedly connected to a number of toothed blocks (304) arranged in a circular array. The toothed blocks (304) are meshed with a rack (305) below. One end of the rack (305) is connected to an electric push rod (306). The lower surface of the inside of the drug inlet chamber (2) is fixedly connected to a pair of third support rods (307). The third support rods (307) are in contact with the second support rod (303) in the same linear direction.

2. The high-performance liquid chromatograph drug delivery device according to claim 1, characterized in that: The electric push rod (306) is fixedly installed on the inner wall of the folding groove (302), and the telescopic end of the electric push rod (306) is fixedly connected to the rack (305). A pair of support rods (301) are arranged in a circular array on the top of the support plate (3).

3. The high-performance liquid chromatograph drug delivery device according to claim 1, characterized in that: A protective pad (3011) is fixedly connected to the side surface of the longitudinal end of the support rod (301), and a protective pad (3031) is fixedly connected to the top of the support rod (303).

4. The high-performance liquid chromatograph drug delivery device according to claim 3, characterized in that: The support rod three (307) has an adapter groove (3071) at one end near the support rod two (303). The support rod three (307) is located inside the adapter groove (3071) and is in contact with the bottom of the adapter groove (3071).

5. The high-performance liquid chromatograph drug delivery device according to claim 1, characterized in that: The bottom of the tray (4) is provided with a limiting slot (401) that is adapted to the width of a pair of support rods (301), and the top of the tray (4) is provided with a sample hole (402) for placing the sample.

6. The high-performance liquid chromatograph drug delivery device according to claim 1, characterized in that: A servo motor (5) is provided below the support plate (3). The servo motor (5) is fixedly installed on the inner wall of the lower surface of the drug inlet chamber (2), and the transmission end of the servo motor (5) is fixedly connected to the support plate (3).

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